.navbar{
    display: flex;
    height: 40px;
}
.navbar .left{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    background-color: #c00000;
}
.navbar .right{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    background-color: #c00000;
}
.navbar .center{
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    background-color: cadetblue;
}